18728048

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{163}}^1\times {\mathrm{167}}^1$

素因数の和:381

約数の個数: 40

約数和(自身を含む): 37580928

約数和(自身を除く): 18852880

約数列:

[1, 2, 4, 8, 16, 43, 86, 163, 167, 172, 326, 334, 344, 652, 668, 688, 1304, 1336, 2608, 2672, 7009, 7181, 14018, 14362, 27221, 28036, 28724, 54442, 56072, 57448, 108884, 112144, 114896, 217768, 435536, 1170503, 2341006, 4682012, 9364024, 18728048]

約数ペア:

[(1, 18728048), (2, 9364024), (4, 4682012), (8, 2341006), (16, 1170503), (43, 435536), (86, 217768), (163, 114896), (167, 112144), (172, 108884), (326, 57448), (334, 56072), (344, 54442), (652, 28724), (668, 28036), (688, 27221), (1304, 14362), (1336, 14018), (2608, 7181), (2672, 7009)]